<script setup>
import {
    Edit,
    Delete
} from '@element-plus/icons-vue'

import { ref } from 'vue'

//文章分类数据模型
const categorys = ref([
    {
        "id": 3,
        "categoryName": "美食",
        "categoryAlias": "my",
        "createTime": "2023-09-02 12:06:59",
        "updateTime": "2023-09-02 12:06:59"
    },
    {
        "id": 4,
        "categoryName": "娱乐",
        "categoryAlias": "yl",
        "createTime": "2023-09-02 12:08:16",
        "updateTime": "2023-09-02 12:08:16"
    },
    {
        "id": 5,
        "categoryName": "军事",
        "categoryAlias": "js",
        "createTime": "2023-09-02 12:08:33",
        "updateTime": "2023-09-02 12:08:33"
    }
])

//用户搜索时选中的分类id
const categoryId=ref('')

//用户搜索时选中的发布状态
const state=ref('')

//文章列表数据模型
const articles = ref([
    {
        "id": 5,
        "title": "陕西旅游攻略",
        "content": "兵马俑,华清池,法门寺,华山...爱去哪去哪...",
        "coverImg": "https://big-event-gwd.oss-cn-beijing.aliyuncs.com/9bf1cf5b-1420-4c1b-91ad-e0f4631cbed4.png",
        "state": "草稿",
        "categoryId": 2,
        "createTime": "2023-09-03 11:55:30",
        "updateTime": "2023-09-03 11:55:30"
    },
    {
        "id": 5,
        "title": "陕西旅游攻略",
        "content": "兵马俑,华清池,法门寺,华山...爱去哪去哪...",
        "coverImg": "https://big-event-gwd.oss-cn-beijing.aliyuncs.com/9bf1cf5b-1420-4c1b-91ad-e0f4631cbed4.png",
        "state": "草稿",
        "categoryId": 2,
        "createTime": "2023-09-03 11:55:30",
        "updateTime": "2023-09-03 11:55:30"
    },
    {
        "id": 5,
        "title": "陕西旅游攻略",
        "content": "兵马俑,华清池,法门寺,华山...爱去哪去哪...",
        "coverImg": "https://big-event-gwd.oss-cn-beijing.aliyuncs.com/9bf1cf5b-1420-4c1b-91ad-e0f4631cbed4.png",
        "state": "草稿",
        "categoryId": 2,
        "createTime": "2023-09-03 11:55:30",
        "updateTime": "2023-09-03 11:55:30"
    },
])

//分页条数据模型
const pageNum = ref(1)//当前页
const total = ref(20)//总条数
const pageSize = ref(3)//每页条数

//当每页条数发生了变化，调用此函数
const onSizeChange = (size) => {
    pageSize.value = size
    articleList()
}
//当前页码发生变化，调用此函数
const onCurrentChange = (num) => {
    pageNum.value = num
    articleList()
}

//回显文章分类
import { articleCategoryListService,articleListService,ArticleAddService } from "@/api/article.js";
const articleCategoryList = async() => {
    let result = await articleCategoryListService();
    categorys.value = result.data;
}

//获取文章数据
const articleList = async() => {
let params = {
    pageNum: pageNum.value,
    pageSize: pageSize.value,
    categoryId: categoryId.value ? categoryId.value : null,
    state: state.value ? state.value : null
}
let result = await articleListService(params);
//渲染视图
total.value = result.data.total;
articles.value = result.data.items;

// 处理数据，给数据模型扩展一个属性categoryName:分类名字
for(let i=0;i<articles.value.length;i++){
    let  article = articles.value[i];
    for(let j=0;j<categorys.value.length;j++){
        if(article.categoryId == categorys.value[j].id){
            article.categoryName = categorys.value[j].categoryName;
        }
    }
}
}

articleCategoryList();

articleList();

import { QuillEditor } from '@vueup/vue-quill'
import '@vueup/vue-quill/dist/vue-quill.snow.css'
import {Plus} from '@element-plus/icons-vue'
//控制抽屉是否显示
const visibleDrawer = ref(false)
//添加表单数据模型
const articleModel = ref({
    title: '',
    categoryId: '',
    coverImg: '',
    content:'',
    state:''
})

//导入token
import { useTokenStore } from '@/stores/token';
const tokenStore = useTokenStore();

//上传成功的回调函数
const uploadSuccess = (result) => {
    articleModel.value.coverImg = result.data;
    console.log(result.data);
}
//清空表单数据模型
 const clearArticleModel = () => {
    articleModel.value = {
    title:'',
    categoryId: null,
    coverImg: null,
    content:'',
    state:''
    }
 }

//添加文章
import { ElMessage, ElMessageBox  } from 'element-plus';
const addArticle = async(clickState) => {
    // 把发布状态给数据模型
     articleModel.value.state = clickState;

     //调用添加接口 
     let  result = await ArticleAddService(articleModel.value);
     ElMessage.success(result.message ? result.message : " 添加成功！")
     //让抽屉消失
     visibleDrawer.value = false;
     //刷新当前列表
     articleList();
}

//展示编辑文章
const showvisibleDrawer = (row) => {
    visibleDrawer.value = true;title.value = '编辑文章'

    articleModel.value.title = row.title;
    articleModel.value.content = row.content;
    articleModel.value.coverImg = row.coverImg;
    articleModel.value.state = row.state;
    articleModel.value.categoryId = row.categoryId;

    articleModel.value.id = row.id;
}

//更改文章信息
import { ArticleDeleteService,ArticleUpdateService } from '@/api/article.js';
const title = ref('');
const updateArticle = async(clickState) => {
    articleModel.value.state = clickState;
    let result = await ArticleUpdateService(articleModel.value)
    ElMessage.success(result.message ? result.message : "更改成功！")
    console.log("触发了编辑函数");
    visibleDrawer.value = false;
    articleList()
}

//删除文章
const delArticle = ( row ) => {
    ElMessageBox.confirm(
    '确定要删除吗？',
    '一旦删除将无法回复！',
    {
      confirmButtonText: '确认',
      cancelButtonText: '取消',
      type: 'warning',
    }
  )
    .then(async() => {
        //调用接口,Vue 3的响应式系统会在底层自动处理属性的读取和更新,无需.value
         await ArticleDeleteService(row.id);
      ElMessage({
        type: 'success',
        message: '删除文章成功！',
      })
      //刷新列表
      articleList();
    })
    .catch(() => {
      ElMessage({
        type: 'info',
        message: '取消删除！'
      })
    })
}
</script>
<template>
    <el-card class="page-container">
        <template #header>
            <div class="header">
                <span>文章管理</span>
                <div class="extra">
                    <el-button type="primary" @click = "visibleDrawer = true;title='添加文章';clearArticleModel()">添加文章</el-button>
                </div>
            </div>
        </template>
        <!-- 搜索表单 -->
        <!-- key="c.id" 有助于Vue进行高效的DOM更新和状态管理
        value="c.id将其对应的ID传递给 categoryId -->
        <el-form inline>
            <el-form-item label="文章分类：">
                <el-select style="width:200px" placeholder="请选择" v-model="categoryId">
                    <el-option 
                        v-for="c in categorys" 
                        :key="c.id" 
                        :label="c.categoryName"
                        :value="c.id">
                    </el-option>
                </el-select>
            </el-form-item>
            <el-form-item label="发布状态：">
                <el-select style="width:200px" placeholder="请选择" v-model="state">
                    <el-option label="已发布" value="已发布"></el-option>
                    <el-option label="草稿" value="草稿"></el-option>
                </el-select>
            </el-form-item>
            <el-form-item>
                <el-button type="primary"  @click="articleList">搜索</el-button>
                <el-button @click="categoryId= '';state = ''">重置</el-button>
            </el-form-item>
        </el-form>
        <!-- 文章列表 -->
        <el-table :data="articles" style="width: 100%">
            <el-table-column label="文章标题" width="400" prop="title"></el-table-column>
            <el-table-column label="分类" prop="categoryName"></el-table-column>
            <el-table-column label="发表时间" prop="createTime"> </el-table-column>
            <el-table-column label="状态" prop="state"></el-table-column>
            <el-table-column label="操作" width="100">
                <template #default="{ row }">
                    <el-button :icon="Edit" circle plain type="primary"@click = "showvisibleDrawer(row)"></el-button>
                    <el-button :icon="Delete" circle plain type="danger" @click="delArticle(row)"></el-button>
                </template>
            </el-table-column>
            <template #empty>
                <el-empty description="没有数据" />
            </template>
        </el-table>
        <!-- 分页条 -->
        <el-pagination v-model:current-page="pageNum" v-model:page-size="pageSize" :page-sizes="[3, 5 ,10, 15]"
            layout="jumper, total, sizes, prev, pager, next" background :total="total" @size-change="onSizeChange"
            @current-change="onCurrentChange" style="margin-top: 20px; justify-content: flex-end" />

            <!-- 抽屉 -->
        <el-drawer v-model="visibleDrawer" :title="title" direction="rtl" size="50%" >
            <!-- 添加文章表单 -->
            <el-form :model="articleModel" label-width="100px" >
                <el-form-item label="文章标题" >
                    <el-input v-model="articleModel.title" placeholder="请输入标题"></el-input>
                </el-form-item>
                <el-form-item label="文章分类">
                    <el-select placeholder="请选择" v-model="articleModel.categoryId">
                        <el-option v-for="c in categorys" :key="c.id" :label="c.categoryName" :value="c.id">
                        </el-option>
                    </el-select>
                </el-form-item>
                <el-form-item label="文章封面">


                    <!-- 
                        auto-upload:设置是否自动上传
                        action:设置服务器接口路径
                        name:设置上传的文件字段名
                        headers:设置上传的请求头
                        on-success:设置上传成功的回调函数
 
                     -->
                    <el-upload class="avatar-uploader" :auto-upload="true" :show-file-list="false"
                    action="/api/upload"
                    name="file"
                    :headers="{'Authorization' : tokenStore.token}"
                    :on-success="uploadSuccess"
                    >
                        <img v-if="articleModel.coverImg" :src="articleModel.coverImg" class="avatar" />
                        <el-icon v-else class="avatar-uploader-icon">
                            <Plus />
                        </el-icon>
                    </el-upload>
                </el-form-item>
                <el-form-item label="文章内容">
                    <div class="editor">
                        <quill-editor theme="snow" v-model:content="articleModel.content" contentType="html">
                        </quill-editor>
                    </div>
                </el-form-item>
                <el-form-item>
                    <el-button type="primary" @click="title == '添加文章' ? addArticle('已发布') : updateArticle('已发布')">发布</el-button>
                    <el-button type="info" @click="title == '添加文章' ? addArticle('草稿') : updateArticle('草稿')">草稿</el-button>
                </el-form-item>
            </el-form>
        </el-drawer>
    </el-card>
</template>
<style lang="scss" scoped>
.page-container {
    min-height: 100%;
    box-sizing: border-box;

    .header {
        display: flex;
        align-items: center;
        justify-content: space-between;
    }
}

/* 抽屉样式 */
.avatar-uploader {
    :deep() {
        .avatar {
            width: 178px;
            height: 178px;
            display: block;
        }

        .el-upload {
            border: 1px dashed var(--el-border-color);
            border-radius: 6px;
            cursor: pointer;
            position: relative;
            overflow: hidden;
            transition: var(--el-transition-duration-fast);
        }

        .el-upload:hover {
            border-color: var(--el-color-primary);
        }

        .el-icon.avatar-uploader-icon {
            font-size: 28px;
            color: #8c939d;
            width: 178px;
            height: 178px;
            text-align: center;
        }
    }
}
.editor {
  width: 100%;
  :deep(.ql-editor) {
    min-height: 200px;
  }
}
</style>